Push-lock



L. KRIZS.

PUSH LOCK.

APPLICATION man JUNE 18. 1920.

1,369,820. Patented Mar. 1, 1921.

myzwroig Loam 1935- I 0 ATTORNEY UNITED STATES LOUIS xmzs, or NEW YORK,N. vY.

rusH-Loox.

Specification of Letters'Patent.

ateiited Mar. 1,

Application filed June is, 1920. Serial No. 389,807.

To all whom it may concern.

Be it known that I, LOUIS Knrzs, citizen of Hungary, residing at NewYork, in the county of New York and State of New York, have inventedcertain new and useful Improvements in Push-Locks, of which the following is a specification.

This invention relates to latches and especially to that type which ismechanically released by the pressing of a button.

The object of this invention is the provision of a small, simple andinexpensive latch adapted for use in furniture, windows, cabinets andthe like, in which it is desirable, on occasion, to hold relativelymovable parts stationary.

A further object of this invention is the provision of a latchconsisting of few parts which may be quickly and easily assembled andwhich cannot readily get out of order.

To attain the above and other objects, I employ the devices shown intheir preferred forms in the accompanying drawing, in which-- Figure 1is a horizontal section of my device on line 11 of Fig. 2.

Fig. 2 is a rear view of my device.

Fig. 3 is a perspective view of the latch bolt and of the springactuating the same.

Fig. 41 is a horizontal section of part of a window to which my devicehas been attached for looking a sash in position.

In the practical embodiment of my invention, the U-shaped frame 10 isheld to frame plate 11 by suitable tenons 12 passed through mortises insaid plate, the outer ends of said tenons being slightly spread to holdtheparts firmly together. A push button 13 passing through a suitableopening in plate 11, is provided with a spring post 14 and a collar 15,both integral with said button, said collar being arranged to engage theunder side of said plate, the'extremlty of said post passing through anopening 16 in frame 10. For normally holding button 13 in its outermostposition, spring 17 is positioned around post 14, one end of said springabutting against button 13 and the other end against frame 10.

The latch bolt member 18 has a latch bolt 19 at one end thereof, while afollower 20 is positioned at the other end thereof, said follower havingan an ularly disposed surface 21 on the inner slde thereof arranged forengagement with collar 15. Braces 22 join parts 20 and 21, whereby theentire member 18 can be made in one piecefor strength and economy. Foruse as a window lock,the latch bolt 19 is made cylindrical as shown 1nFig. 4. To attach flat spring 23 to member 18, suitable notches, equalin' width to the thickness of said spring are made in the end of saidmember near follower 20. After the spring has been insertedmto saidnotches, the metal at the ex-, tremitles of said notches is spread so asto partly close the notches over the edge of sald sprlng, whereby thespring is firmly held in place. 7

Pressure on button 13 in the direction of the arrow (Fig. 1) movescollar 15 in the same d1rect1on, said collar engaging the edge 21 offollower 20 and moving member 18 against the action of spring 23 todisengage latch bolt 19 from plate 24, which is suitably attached to thecabinet, window frame or piece of furniture, as by screws 25. Release ofbutton 13 causes spring 17 to push said button outwardly, disengagingcollar 15 from follower 20 and allowing spring 23 to urge the latch boltinto its operative po-I sition.

It will be seen that the number of separate parts is reduced to aminimum, and that sa1d parts are readily assembled, so that my devlcewhile efiicient, is comparatively in ex ensive.

hat I claim is V 1. A latch comprising a casing, a boltframe slidable insaid casing, a bolt formed on one end of said boltframe, a beveledoffset on the opposite end of said bolt frame, a push-button extendingthrough one wall of the casing and having a shank extending transverselythrough the said frame, a spring surrounding said shank and normallypressing said pusn-butt0n outward. and a radially extending peripheralflange formed on said push-button and adapted to engage the said beveledoffset on the bolt frame to move the bolt to locking position When thepush-button is moved inwardly and to bear against the casin wall tolimit the outward movement of sald push-button under the influence ofthesaid spring.

2. A latch comprising a casing, a bolt-' frame slidable in said casing,a bolt formed on one end of said bolt-frame, a beveled offset on theopposite end of said bolt frame, a push-button extending through onewall of the casing and having a shank extending transversely through thesaid frame, a

spring surrounding said shank and normally presslng said push-buttonoutward, and a radially extending peripheral flange formed on saidpush-button and adapted to engage the said beveled ofiset on the boltframe to a move the bolt to locking position when the push-button ismoved inwardly and to bear against the casing wall to limit the outwardmovement of said push-button under the influence of the said spring, anda bow spring 10 In' testimony whereof I have affixed my 15 signaturethis 17th day of June 1920.

i LOUIS KRIZS.

